rbenv インストール

1.まずはgit

yum -y install git

2.rbenv clone

git clone https://github.com/sstephenson/rbenv.git ~/.rbenv

 3.確認

echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile
echo 'eval "$(rbenv init -)"' >> ~/.bash_profile
exec $SHELL -l
rbenv --version
4.ruby-build clone

git clone https://github.com/sstephenson/ruby-build.git ~/.rbenv/plugins/ruby-build

5.ruby install

yum -y install openssl-devel    これを忘れないように！！

rbenv install -v　2.1.5

rbenv rehash

rbenv versions

rbenv global 2.1.5

ruby -v